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Boss CX350

400W Max 4-Channel Chaos Exxtreme Series Amplifier (CX-350)

Discontinued
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This item has been discontinued

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  • Chaos Exxtreme 4-Channel Class AB Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 50 watts x 4 chan.
  • Max power output: 100 watts x 4 chan.
  • Pulse width modulated MOSFET power supply
  • LED power and protection indicators
  • Tuned Bass EQ (0-18 dB bass boost)
  • Input voltage sensitivity selector
  • Speaker-level inputs with soft turn-on
  • Remote turn-on/off circuit
  • Thermal and short circuit protection circuitry
  • Variable gain control
  • Silver anodized aluminum heatsink
  • Chrome-plated RCA level inputs
  • Chrome-plated screw terminals
  • Frequency response: 9-50000 Hz
  • Dimensions: 9-13/16"L x 7-11/16"W x 2-3/16"H
  • 8-gauge power and ground leads recommended. Contact us for information regarding a discount on a select amplifier kit when purchased together.
  • Authorized Internet Dealer
  • 2-year Manufacturer's warranty

Product History:

Boss CX350 thumbnail
(newest, current model)
Boss CH350 thumbnail
(previous model, replaced by Boss CX350)

Power Specifications - Full Range Channels

RMS Power @ 4 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 4 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

50 watts x 4 channels
Peak Power Output
This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. Often times this maximum is achieved during a brief musical burst, such as a drum accent, or low bass hit.

Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison.

100 watts x 4 channels

Amplifier Specifications

Amplifier Series
This designates the series of the amplifier. Many amps are available in a litany of different wattage and channel configurations, but maintain consistent features throughout the product line.
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

AB
Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
4
Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.

400 watts
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.

200 watts
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
4 AWG
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 ohms
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
4 ohms
THD at Rated RMS Power
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
0.01%
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
Yes
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
No
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

None
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
90 dB
Channel Separation
Also referred to as crosstalk. The amount of interference on one stereo channel caused by the leaking of the other stereo channel. The higher the rating in decibels (dB), the better the Channel Separation.
60 dB
Bass Boost
The objective of the bass boost is to get more kick out of your subwoofer. It is a circuit that emphasizes the lower frequencies at a given point. The bass boost should always be set first before setting the gain. This feature is known for destroying subwoofers and is commonly used incorrectly, so be cautious.
0 - 18 dB
Bass/Gain Remote
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
No
Fan Cooled
A great feature to have if an amp generates a large amount of heat. Cooling fans can help regulate the temperature to prevent the amp from overheating (burning).
No
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
15A x 1 
CEA-2006 Compliant
Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:
  • RMS Power
  • Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.

No

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
6 years
Labor Warranty Duration
6 years
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
47%
4 Star
41%
3 Star
12%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.2
Value
4.7
Features
3.8
Design
4.5
Usability
4.8

steven

Reliance, WY

Overall
Durability
Value
Features
Design
Usability

great for the price

July 10, 2008

i have this amp powering 2 Dual xs6933 6X9 3 way on 2 channels and 2 boss tw12 tweeters on the other 2 and it powers them all very well with good sound although i do have some trouble getting my mids out the description is wrong though this amp does not have crossovers and its not bridgeable the only real problem I have so far is alternator wine at very low volumes but i have nothing on any of my lines to prevent this ether so i thought its to be expected its nothing enough to bother me it is very good for the price

2 of 2 found this helpful

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hampsterblade

Dayton, OH

Overall
Durability
Value
Features
Design
Usability

Cheap amp. nothing impressive to offer. not durable

August 12, 2013

I've been using this amp in my car for about 6 months now and it works pretty well for a basic amp driving the 4 Polk audio 6.5s in my car. Unfortunately that's all that was good about it. The there are no preouts so splitting my channels from back to front was way more difficult than it should have been. The amp has no filtering what so ever. It amplifies power noise pretty bad. I had to install ground loop isolators despite my signal and power being far apart. My Rockford fosgate amp doesn't have this problem. No hi-pass or low-pass, but I knew that before hand I really wish it had a hi-pass as my speakers don't like really low bass and I have a sub. The high-level input had nothing but ground loop noise. Couldn't get it to work at all. The last big problem, after 6 months use the 3+4 channels completely died. Now I have to run my rear speakers off the head unit again. If you have 20 more bucks, I'd recommend getting something a little more solid.

0 of 0 found this helpful

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David

Iowa

Overall
Durability
Value
Features
Design
Usability

Great product.

February 22, 2013

I put this in my boat to get a little boost while running on the river. Works great.

0 of 0 found this helpful

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Brandon

Berlin, NH

Overall
Durability
Value
Features
Design
Usability

good amp

August 21, 2012

I bought this amp a while back and it works very well. Never over heats, even with a trunk full of stuff surrounding it. good little amp, price is great.

0 of 0 found this helpful

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tom

dallas nc

Overall
Durability
Value
Features
Design
Usability

working boss cx350

January 24, 2012

This thing works well and is fairly easy to install with a little skill but has a high operating temp so be careful where you mount it.

0 of 0 found this helpful

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seattle_mua

Augusta, GA

Overall
Durability
Value
Features
Design
Usability

Equalizer

December 26, 2011

You must add an equalizer to make it clearer and louder.

0 of 0 found this helpful

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Dao

Augusta, GA

Overall
Durability
Value
Features
Design
Usability

Great amp

December 15, 2011

I bought it about six months ago and it is still working great. I don't have any complaints about it. So far it is good for me.

0 of 0 found this helpful

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Dennis

agawam ma

Overall
Durability
Value
Features
Design
Usability

bo crossover

November 21, 2011

For a cheap amp it does what it is suppose to. But there is no crossover.

0 of 0 found this helpful

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LU

Riverside, CA

Overall
Durability
Value
Features
Design
Usability

Boss CX350

October 5, 2011

It's a good amp for someone on a budget. If you can afford it go with something stronger.

0 of 0 found this helpful

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Aaron

Spokane, Washington

Overall
Durability
Value
Features
Design
Usability

Boss CX350

September 13, 2011

Great product for the money. I was skeptical about buying this because it was so cheap but it works great. Powers up a set of four speakers nicely.

0 of 0 found this helpful

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Stevin

Summit, MS

Overall
Durability
Value
Features
Design
Usability

Very Very nice amp!!!!

April 28, 2011

I brought the Boss CX350 to push 4 6x9's i can't believe the power i'm getting from it awesome!! I highly recommend to anybody how wants to spend a little money and get alot of power. I love Sonic i would never buy out of the stores again... Thank You

0 of 0 found this helpful

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Tanmcnew

Santa Cruz, CA

Overall
Durability
Value
Features
Design
Usability

Does Work!!

March 31, 2011

I bought this amp to mach my other Boss Chaos 600W amp and give my speakers a little more kick to match the thump of my subs. I think it a mighty fine product and does what it is supposed to. It looks really cool, and it hooks up to my lighting unit just fine so that was a plus.

0 of 0 found this helpful

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MikeyMike

Kansas City, MO

Overall
Durability
Value
Features
Design
Usability

excellent speakers

November 23, 2010

Great value and great sound...would def recommend!

0 of 0 found this helpful

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T-REV

Rogers, AR

Overall
Durability
Value
Features
Design
Usability

Awsome Amp!

September 10, 2010

Bought this amp a few weeks ago and it rocks! I have a jeep wrangler and it is pushing two pioneer 6x9s and two 6 1/2 speakers, they sound so much better. Also the Sony cdx gt640ui is pushing two 4x6 pioneers and it is amazing! Love Sonic! Shipping was fast and installation was easy. Will always use them.

0 of 0 found this helpful

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Nando

Chicago

Overall
Durability
Value
Features
Design
Usability

Great product A+

August 28, 2009

This is a great product if you want to give extra watts and better sound to your car speakers.

0 of 0 found this helpful

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pbforce09

denton texas

Overall
Durability
Value
Features
Design
Usability

its good

February 18, 2009

these amp is well worth its money the shipping was good it is really durable i had it in my trunk several days but it wasn't mounted correctly i didn't have enough time it slid across my trunk and still works as good as new with only a few scratches i will say buy it if you are looking for something cheap it works great for the cost

0 of 0 found this helpful

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jesus

miami, FL

Overall
Durability
Value
Features
Design
Usability

boss 4 channel amp

April 10, 2008

This amp is a great buy i have it hooked up to my inside speakers that are kicker and it sounds great this is the best amp for such little cost.

0 of 0 found this helpful

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Accessory Tools and Products

Accessories added

NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

Your Price $79.99

Kicker Big 3 Package 1/0 Gauge Big 3 Upgrade Kit

Get all you need including wire cutters to upgrade your power and ground wire.

Your Price $149.99

Belva BBG3KT CCA 1/0 Gauge Big Three Kit

Features everything needed to upgrade factory power and ground wire.

Your Price $39.99

Universal Remote Level Bass Control

Controls bass level and frequency via RCA/Interconnect connectors on any amp.

Your Price $7.99

Small Universal Remote Level Bass Control

The Scosche RLC is a smaller universal bass remote that connects via RCA inputs.

Your Price $11.99

StreetWires FB8

8 Gauge Firewall Bushing

Your Price $6.95

NVX XDBU4 - Top of the Line!

Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs

Your Price $17.99

Professional Installation for your Car Power Amplifier

Covers labor charges through our professional installer network.

Your Price $89.99

NVX XIV45 4-Channel RCA Audio Interconnect Cable

5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $23.99

Kicker K-Series RCA Interconnect Cable

19 ft. of 4-Channel RCA cable with dual twisted-pair conductors, hyper-flex technology, and gold plated contacts for maximum signal transfer!

Your Price $29.95

StreetWires ZN7 RCA Interconnect Cable

16.4 ft. of 4-Channel RCA Cable with hyper twist construction, oxygen free copper, and precision machined tips.

Your Price $59.99

NVX XWS1625 16 AWG Speaker Wire

25 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $13.99

Belva BBSW127 12 AWG Speaker Wire

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $14.99

Belva BBSW167 16 AWG Speaker Wire

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $12.99

SMD DD-1 Distortion Detector

Set the gain of an audio amplifier quickly and accurately

Your Price $149.99

Scosche SPL Meter SPL1000F

Handheld boomSTICK measures your SPL range from 60 to 135 dB

Your Price $21.99

AutoSound 2000 CD-102

High Frequency Test CD specifically designed for the set-up and evaluation of sound system imaging and placement.

Your Price $11.99

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Product Summary

Manufacturer

Model Number

CX350

UPC

791489108195

Weight

4.00lbs

Internal SKU

cx350

Internal Product ID

11596

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Boss CX350